Effect of Nitrogen Topdressing Period on Grain Filling Characteristics of Strong Gluten Wheat
Yang Lijuan
Ma Huaping
Jiang Zhikai
Sheng Kun
Dong Yun
Liu Zhaohui
Abstract：Using strong gluten variety Xinmai 26 as material, the grain filling progress was fitted and the parameters were calculated by Logistic equation under field condition to discuss the effect of nitrogen topdress -ing period on grain filling characteristics .The results showed that the increase of 1 000-grain weight showed S type under different topdressing periods .Under the same nitrogen application amount , the grain filling dura-tion time, average filling velocity , the maximum filling velocity as well as the duration time of three stages in filling progress were variant among different treatments .Topdressing at booting stage was proved to be the best for ensuring nitrogen supplying at late filling stage and extending duration time of the slowly increasing stage , which was benefit for increasing seed weight and yield .
Keywords：Strong gluten wheatTopdressing nitrogenGrain filling1 000-grain weight
Publication Date：2014-11-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 72-74,78 )